gm107/ir: Emit third src 'bound' and optional predicate output of SHFL

v2: Emit the original hard-coded 0x1c03 when OP_SHFL is used in gm107's
    lowering (Samuel Pitoiset)

Signed-off-by: Boyan Ding <boyan.j.ding@gmail.com>
Reviewed-by: Ilia Mirkin <imirkin@alum.mit.edu>
2 files changed